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Q1) In 1982, CDC report explained that 3 persons who had before received whole blood transfusions developed acquired immuno deficiency syndrome (AIDS). In 1948, after discorvery of human Immuno deficiency virus (HIV), 5 companies were licensed to produce enzyme- linked immunos orbent assay(EIA, then called ELISA) test. Kits for detecting HIV antibody. In march, 1985, first kit was approved by FDA. Numerous complex issues were explained even before licensure such as false positive test results to find out whether test- positive blood donors must be notified. It is now march2, 1985. First HIV antibody test kits will arrive in blood banks in state in few hours, meeting with state Epidemiologist to explain suitable use of this test are commissioner of health , medical director of regional blood bank, and chief of state drug abuse commissioner.
To help discussion, state epidemiologist turns to pre licensure information regarding sensitivity and specificity of test kit A. Information points out that sensitivity of test kit a is 95% and specificity is 98%.
Using a separate 2 by 2 table, compute predictive value positive and predictive value negative for population of 1,000 drug users. Suppose that actual prevalence of HIV antibody among intravenous drug users is 10.0%
Problems on Sampling Variability and Standard Error and Confidence Intervals
Categorize the following as discrete or continuous random variables.
MATH1550H: Assignment: Questions: Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.
Cores on two tests have a bivariate normal distribution; and that correlation of 2 scores is 0.8. Determine the probability that sum of the student's scores on 2 tests will be greater than 200?
An experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield. There were 64 plots, and each of the 16 factor combinations was randomly assigned to 4 plots
To find out the proportion of the population of likely voters who agree the statement. Could we say among appropriate statistical certainty which the proportion of the population of likely voters.
A college student is taking 5 courses in a semester. He is willing to assume that he will get an A with probability 0.10, a B with probability 0.80, and a C with probability 0.1 in each of the courses. He defines X1, X2, and X3 to be the number of..
Then use ogive to estimate median and first and third quartiles. Also utilize it to reply following question: What percent of 60 mutual fund loads are less than 75.
An experiment was conducted to determine the effects of three different pesticides (P1,P2,P3) on the yield of three different varieties of citrus tree (V1,V2,V3).
LPP using the graphical method. Solveout the following linear programming problem utilizing the corner point method.
For a binomial probability experiment, with n=150 and p=.2, it is appropriate to use the normal approximation to the binomial distribution.
For each lettered part, a through c, examine the two given sets of numbers. Without doing any calculations, decide which set has the larger standard deviation and explain why. Then check by finding the standard deviation by hand .
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